Synthesis of novel perfluorosulfonamide monomers and their application
摘要:
The novel perfluorosulfonamide monomers and their preparation methods have been developed. The ternary-copolymer membranes, utilizing the perfluorosulfonamide monomers as the cross-linking site, can be efficiently converted to the cross-linked membranes with the strictly controlled structure. The novel cross-linking method has proved to be effective for the improvement of the mechanical properties at high temperature, while keeping its high proton conductivity. (c) 2006 Elsevier B.V. All rights reserved.
New preparation of 1,1,2,2-tetrafluoro-2-(trifluoroethenyloxy)-ethanesulfonyl fluoride
作者:Nobuyuki Uematsu、Nobuto Hoshi、Masanori Ikeda
DOI:10.1016/j.jfluchem.2006.09.005
日期:2006.12
A newpreparationmethod of 1,1,2,2-tetrafluoro-2-(trifluoroethenyloxy)-ethanesulfonyl fluoride (8) has been developed utilizing the unique performance of the imidazole protectivegroup. Namely, the electrodonating character of the imidazole protectivegroup on the sulfonyl group enables the formation of the novel intermediate monomer, which can be easily converted to 8 by the reaction with HF.
The novel perfluorosulfonamide monomers and their preparation methods have been developed. The ternary-copolymer membranes, utilizing the perfluorosulfonamide monomers as the cross-linking site, can be efficiently converted to the cross-linked membranes with the strictly controlled structure. The novel cross-linking method has proved to be effective for the improvement of the mechanical properties at high temperature, while keeping its high proton conductivity. (c) 2006 Elsevier B.V. All rights reserved.